Implementation of an epicardial implantable MEMS sensor for continuous and real-time postoperative assessment of left ventricular activity in adult minipigs over a short- and long-term period.

The sensing of left ventricular (LV) activity is fundamental in the diagnosis and monitoring of cardiovascular health in high-risk patients after cardiac surgery to achieve better short- and long-term outcome. Conventional approaches rely on noninvasive measurements even if, in the latest years, invasive microelectromechanical systems (MEMS) sensors have emerged as a valuable approach for precise and continuous monitoring of cardiac activity. The main challenges in designing cardiac MEMS sensors are represented by miniaturization, biocompatibility, and long-term stability.

Neural Stimulation Hardware for the Selective Intrafascicular Modulation of the Vagus Nerve.

The neural stimulation of the vagus nerve is able to modulate various functions of the parasympathetic response in different organs. The stimulation of the vagus nerve is a promising approach to treating inflammatory diseases, obesity, diabetes, heart failure, and hypertension. The complexity of the vagus nerve requires highly selective stimulation, allowing the modulation of target-specific organs without side effects.

Left cardiac vagotomy rapidly reduces contralateral cardiac vagal electrical activity in anesthetized Göttingen minipigs.

Background: The impact of acute unilateral injury on spontaneous electrical activity in both vagus nerves at the heart level is poorly understood. We investigated the immediate neuroelectrical response after right or left cardiac vagal nerve transection (VNTx) by recording spiking activity of each heart vagus nerve (VN).

Methods: Fourteen male Göttingen minipigs underwent sternotomy.

Cardiovascular Response to Intraneural Right Vagus Nerve Stimulation in Adult Minipig.

Objective: This study explored intraneural stimulation of the right thoracic vagus nerve (VN) in sexually mature male minipigs to modulate safe heart rate and blood pressure response.

Material And Methods: We employed an intraneural electrode designed for the VN of pigs to perform VN stimulation (VNS). This was delivered using different numbers of contacts on the electrode and different stimulation parameters (amplitude, frequency, and pulse width), identifying the most suitable stimulation configuration.

Occupational burnout in oncologists in Kazakhstan.

Background: Although burnout levels in oncologists are likely high, its predictors remain poorly understood.

Aims: This study was aimed to verify the prevalence of occupational burnout in oncology doctors and nurses in the major cancer centre in Kazakhstan and to elucidate its predictors to plan future prevention activities.

Methods: In the leading tertiary-level cancer centre in Kazakhstan, we recruited 256 subjects (67% doctors and 33% nurses, 62% women, median age 37.

Prevalence and patient awareness of inflammatory bowel disease in Kazakhstan: a cross-sectional study.

Background/aims: There has been a paucity of published data on the epidemiology of inflammatory bowel disease (IBD) in Central Asia and Kazakhstan. Therefore, we aimed to study IBD prevalence and patient awareness among adults in Kazakhstan.

Methods: The cross-sectional study was carried out among subjects of both sexes aged 18 years and older using IBD Alert Questionnaire (CalproQuest), single fecal calprotectin test, and endoscopy with biopsy to verify IBD from January to December 2017, across regions of Kazakhstan.

Occupational burnout and lifestyle in Kazakhstan cardiologists.

Background: No data exist in the published literature on burnout in physicians from Central Asia. The aim of this analysis was to assess burnout prevalence in doctors and nurses of a cardiological hospital in Almaty, Kazakhstan and ascertain whether smoking, alcohol and physical activity may predict job-associated burnout.

Methods: The staff of the City Cardiological Centre of Almaty ( = 259, 82% females) filled in the questionnaire with the questions on demographics, lifestyle, including smoking, alcohol and physical activity, as well as fatigue (using Fatigue Severity Scale (FSS)) and burnout using Maslach Burnout Inventory (MBI) Human Services Survey for Medical Personnel.

Age and work duration do not predict burnout in firefighters.

Background: The aim of this study was to ascertain the prevalence of burnout in Kazakhstan firefighters with regard to position and to identify predictors of faster burnout in order to plan future preventive strategies.

Methods: Data on demographics, lifestyle, fatigue (Fatigue Severity Scale (FSS)), SF-8 health-related quality of life (HRQL) and Maslach Burnout Inventory (MBI) emotional exhaustion (EX), cynicism (CY) and professional efficacy (PE) were obtained from 604 (94% men, median age 27 (interquartile range (IQR) 12) years) firefighters from all 18 fire departments of the city of Almaty. Associations between predictors and burnout EX, CY and PE dimensions were tested using multivariate logistic regression analyses.

Prevalence of supplement use in recreationally active Kazakhstan university students.

Background: Little is known about the supplements use and recreational sport practices in Kazakhstan university students. Therefore, the aim of this study was to ascertain supplements use prevalence and their predictors in this population.

Methods: Cross-sectional survey of both undergraduate and graduate level students was completed in 2017 et al.

Gene silencing of endothelial von Willebrand Factor attenuates angiotensin II-induced endothelin-1 expression in porcine aortic endothelial cells.

Expression of endothelin (ET)-1 is increased in endothelial cells exposed to angiotensin II (Ang II), leading to endothelial dysfunction and cardiovascular disorders. Since von Willebrand Factor (vWF) blockade improves endothelial function in coronary patients, we hypothesized that targeting endothelial vWF with short interference RNA (siRNA) prevents Ang II-induced ET-1 upregulation. Nearly 65 ± 2% silencing of vWF in porcine aortic endothelial cells (PAOECs) was achieved with vWF-specific siRNA without affecting cell viability and growth.

Impact of acute changes of left ventricular contractility on the transvalvular impedance: validation study by pressure-volume loop analysis in healthy pigs.

Background: The real-time and continuous assessment of left ventricular (LV) myocardial contractility through an implanted device is a clinically relevant goal. Transvalvular impedance (TVI) is an impedentiometric signal detected in the right cardiac chambers that changes during stroke volume fluctuations in patients. However, the relationship between TVI signals and LV contractility has not been proven.

Pantoprazole significantly interferes with antiplatelet effect of clopidogrel: results of a pilot randomized trial.

Background: The CYP2C19*2 polymorphism is significantly associated with residual platelet reactivity (RPR) and maybe a major confounding factor in studies evaluating pharmacological interactions with clopidogrel.

Objectives: We sought to evaluate the influence of a proton pump inhibitor (PPI), pantoprazole, indicated as relatively less influent than other PPIs, on the antiplatelet effect of clopidogrel, considering a stratification of the population for the presence of cytochrome 2C19*2 polymorphism.

Methods: 105 patients with ST elevation myocardial infarction (STEMI), treated with percutaneous coronary angioplasty (PCI) and who received dual antiplatelet therapy, were randomized between pantoprazole (n=54) or ranitidine (n=51).